Complete End-to-End Conditioning, with Light-Duty Crimped Wheel removing light corrosion, rust and paint while the Heavy-Duty Knotted Wheel design excels at removing heavy corrosion, rust and paint. These wheels are easy-to-use, long-lasting and quickly clean metal in restricted surface areas like pipes or borders. The 4.5” Makita Crimped & Twist Wire WHEEL Set is designed to work with your 4-1/2” Angle Grinder. Unlike a coated abrasive, however, a wire brush or wheel is designed to condition metal surface area and is NOT a metal removal accessory. Ideally suited for removing heavy corrosion, rust, paint, spatter and scale removal while also cleaning weld edges and deburring metal in hard to reach areas; great for cleaning castings, structural steel and sheet metal while also roughening for adhesion, finishing for appearance and preparation prior to plating or painting. Holding the brushes at an angle of no more than 5° with light, constant pressure ensures full wire-workpiece contact and maximal wire life. Incorrect angles or excessive pressure makes the wires heat up, become fatigued and prematurely break, while also may show up as bluing of the wires and the "groaning" of the angle grinder from the excessive load. Carbon Steel Wheels should only work on Carbon Steel to avoid cross contamination.